[M17X R2] CPU FAN Upgrade Let's Give It a Try !

Hi folks ! :hi2:

Maybe some of you are aware of this, you can upgrade the cpu fan in m17x r3/r4 from the 2 Cfm stock one to the M14 x R2 11 Cfm one. But i have never seen someone try this on m17x R2.

So i have just ordered an m14x r2 fan ( the xng something, the good one ) AND an old m15x fan.

You should ask why ? So if you look at the connector, the m14x r2 fan has a 4 pin jst connector, and the m17x r2 have a 5 pin jst connector, but the last pin deserve to nothing, the wire is cut and hide under the heatshrink.

So i will desolder the old m15x wires and solder it on the m14x fan to see if it work and if there are some benefit.

A other thing is the exhaust of the m17x fan, a little bit different from the m14x, some screws may not be in the same place ... Well that will not be interresting without some fun.

I might get all the stuff in a week or two. FYI it's about 30$ for the fan and 10$ for the old m15x fan.

 

Good luck!

 

So guys,

I have just received my m14x r2 fan from usa, not yet the one from france ... ( i live in france )

The m14x fan is way smaller than the m17x, so the problem is the air will not go trow the heatsink properly. So i will have to cut out the m17x fan from his frame and keep the frame as an air duc, luckyly the m14x fan with its frame can go inside the m17x fan frame without too much modding ( just cut the leg ).

As i can't test it for now ( i need the m15x fan wire, i don't want to destroy my m17x fan and realise after that its not working ... ). I have just order an other m17x cpu fan in spare in case all of this end in a giant garbage and waste of money.

 

Yea m14x fans are way smaller .
I'm not sure if it could push all the air out of heatsink.
Let me know how it goes.

 

Yea i have seen this, the idea is to open the stock fan and put out the rotor, just keep the frame and put in the m14x fan. I have tested it yesterday and it goes in if you cut the legs, you can close the m17x fan with the m14x fan inside without problem.

Tonight i will test the m14x fan wire to see wich go where, i will wait for my spare stock cpu fan as i need a working laptop for now.

Some news, i have receive my m15x fan, cut its wire and solder them to the m14x fan. That work ! With only +12 and ground the fan run at full speed, with the yellow wire too no change, and with the last wire the pwm work and the mobo drive the fan like the stock one.

I have just put it in the hole for the stock fan so no air duc or anything and my 920 xm hold wprime @ 3.35 Ghz at 70 ° max ! Can't wait to see th result with the air duc !

For those who are looking for the m14x r2 fan pinout :


+5v / rpm signal / pwm signal / ground

The +5V has a little red dot at the start of the wire, the rpm a yellow dot, the pwm a white dot and no dot for the ground.

Here are some pics, i haven't got shrinktupe at this moment but you should use them if someone want to do the same. Cleaner job.

So you can see that the heatsink is a bit under the motherboard level so without an airduc you push air on something like 50 % of it.

Some more pics.

 

So here are the results.

I have received the m17x fan, do the modding things, some pics :



And nothing better than stock fan, nothing worse too. That's strange, the air flow is clearly better, i can feel the difference without any problem but i still have trhotling at 3.3 Ghz with Wprime. The 920 go to 95 ° and 2.7/2.9 Ghz etc etc ...

So don't do it, it work but deserv to nothing.

 

Last update i think, i have push the concept at his maximum.

I have stick the m14x fan at the same level as the original fan. Pictures will talk better i think :

IMAG0551 by toto29620 posted Feb 22, 2015 at 10:00 PM

IMAG0550 by toto29620 posted Feb 22, 2015 at 10:00 PM

IMAG0549 by toto29620 posted Feb 22, 2015 at 10:00 PM

IMAG0548 by toto29620 posted Feb 22, 2015 at 10:00 PM

IMAG0547 by toto29620 posted Feb 22, 2015 at 10:00 PM

IMAG0546 by toto29620 posted Feb 22, 2015 at 10:00 PM

The result : much better ! At first i was aiming a full load wprime stability and no throttle ... well that's not a option i think. So i have to use a other way than the standart hight performence water cooled desktop.

Now i am aiming a good frequency and no throttle in game. Dying light was giving me 93 ° at 2.9 Ghz on core 0 , now i get 80 ° at 3.4 Ghz on core 0 !

So i have really improve the game playability , i went from 20/25 fps to 35/45 fps ! I will try to go a bit highter but i need to increase the vcore, might be a problem.



So in the end that's a good upgrade ! i recommend it, you will not push the 920xm to 4ghz under benchmark but in game maybe ... And for me on this laptop that's all i want, i have my desktop for big oc.

 

Hello, I'm glad it worked out for you. I'd like to follow your guide to do the same however I'm a bit confused about the last post- Did you remove the insides of the M14x fan and put them inside of the case for the M17x fan?

 

Yep that's it, i have put the fan and a bit of the m14x case at the original place of the m17x fan. Don't expect an uge improvement if you don't use hwinfos to drive the fan. It provide some more headroom only at full speed and the motherboard never put it at full speed so ... I have set it to run like the stock one under 60 °C and above 4000 rpm until 70 °C then max so 4500/4750 rpm.

 

There's a fan more powerful than the one you've used - the 17" EliteBook's and ZBook's one. Single fan, supposed to cool in excess of 150W. The EliteBook's one is slightly larger than the stock CPU one, while the ZBook's one adds two more blades in the mix. My guess is that it would be quite the upgrade (the ZBook one that is). Good luck finding it though.

 

Have you got the complete name ? I have found ton's of Elitebook and Zbook in 17" , fans are an ebay and aliexpress, this one for exemple look interresting : http://www.aliexpress.com/item/Lapt...-DELTA-KSB0805HBA01-5V-0-60A/32239562308.html

Look's like this one is even better :

http://www.aliexpress.com/item/DFS5...X-14-15-17-724870-001-725684/32306453342.html

 

Thanks toto for the test and upgrade proposal! very nice to try!

My 2 questions:
- that m14x fan is really better than the m17x one?

- what about noise levels?

For me the only reason th upgrade my m17x fans would be to get cooling as good as original m17x fan but with less noise. does that work?

 

No, clearly no. The aim is to get more airflow and it's a bit better with this fan but you have to push it at max speed to see that and it's very noisy at 4750Rpm , more than the stock one.

Non ce n'est clairement pas une bonne idée dans ce cas, le ventilo est plus ou moins équivalent à celui d'origine et peu pousser un peu plus haut ce qui apporte un certain gains, mais il devient très bruyant à fond, si tu as déjà eu une HD4870 avec le rad stock c’est plus ou moins similaire.

 

Yep, that's the one! The blade/fan is 68mm by the way (at least on the 8740w, this one might be larger). The second has more blades, but is most likely smaller, so not really comparable. Only MSi has stronger fans, but they are 12V if you are willing to take that road.